Abstract

The comprehensive study of radiation hardening of the ferritic-martensitic steels RUSFER-EK-181 (Fe–12 Cr–2 W–V–Ta–B–0.16 С) and ChS-139 (Fe–12 Cr–Ni–Mo–W–Nb–V–N–B–0.20 C) using Fe ion irradiation at temperatures of 250–400°С to damage doses of ~6 dpa is conducted. The quantitative analysis of radiation-induced changes in the RUSFER-EK-181 and ChS-139 steel microstructure is performed by transmission electron microscopy and atom probe tomography. The study of hardening of steel samples irradiated with ions by nanoindentation and the evaluation within the framework of the dispersed barrier model show that the detected radiation-induced clusters and dislocation loops play an important role in the low-temperature radiation hardening of the RUSFER-EK-181 and ChS-139 steels.

中文翻译：

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重离子辐照模拟实验中铁素体-马氏体钢RUSFER-EK-181和ChS-139的辐射硬化的微观起源研究

摘要

铁素体-马氏体钢RUSFER-EK-181（Fe–12 Cr–2 W–V–Ta–B–0.16С）和ChS-139（Fe–12 Cr–Ni–Mo–W）的辐射硬化的综合研究–在250–400°С的温度下使用Fe离子辐照–Nb–V–N–B–0.20 C）进行〜6 dpa的破坏剂量。RUSFER-EK-181和ChS-139钢显微组织中辐射引起的变化的定量分析是通过透射电子显微镜和原子探针层析成像技术进行的。通过纳米压痕对钢样品进行离子辐照硬化的研究以及在弥散势垒模型框架内进行的评估表明，检测到的辐射诱导的团簇和位错环在RUSFER-EK的低温辐射硬化中起着重要作用-181和ChS-139钢。